Free tier only
Free Alternatives to OpenCode (2026)
OpenCode has a free tier, but if it does not fit, Here are 6 Developer Tools tools you can start using for free, ranked by how closely they match OpenCode, with what each charges once you outgrow the free plan.
Closest free matches
Ranked by shared use cases, audience and stack with OpenCode. Every tool here lists a free plan.
Ultracite is an open-source, zero-configuration preset for Biome, Oxlint and ESLint. It lints and formats JavaScript and TypeScript code and checks each edit an AI coding agent makes against a strict, shared set of rules.
NitroStack is a platform for building, testing and hosting Model Context Protocol (MCP) servers. It combines an open-source TypeScript SDK, a desktop IDE called NitroStudio and a serverless host called NitroCloud.
Harness is Autonomous' open-source (MIT) command center for coding agents: run Claude Code, Codex, Cursor, OpenCode and more side by side across your machines, with end-to-end encrypted remote terminals.
Craft Agents is an open-source (Apache 2.0) desktop app from the makers of Craft Docs for working with AI agents. It connects agents to MCP servers, REST APIs, local files and a built-in browser, with multi-session workspaces, Skills, Automations and Pages.
CPFHub.io is a REST API for Brazilian CPF data. Simple lookup returns name, gender and birth date (~150 ms typical). Real-time lookup checks situação cadastral and death year directly at Receita Federal. Bulk jobs, MCP server for AI agents, OpenAPI spec. Free plan: 50 credits/month, no card.
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Other free Developer Tools tools
Popular free tools in the same category. Less closely matched to OpenCode, but worth a look.
| Tool | Free plan | Paid from |
|---|---|---|
| TechLogHub Discover, launch, and track the next generation of tech products and open-source innovation. | Free Listing · $20/Month | $20 |
Free alternatives to OpenCode: FAQ
Quick answers to common questions
Is OpenCode free?
Yes, OpenCode offers a free tier; paid plans start at $10. The tools below are alternatives that are also free to start.
What is the best free alternative to OpenCode?
Ultracite is the closest free match by shared use cases, audience and stack. NitroStack, Harness by Autonomous and Craft Agents are the next closest.
Which free Developer Tools alternatives have paid upgrades?
Harness by Autonomous (from $149) and TechLogHub (from $20) list paid plans above their free tier. 4 of the tools listed publish no paid price at all.
How were these free alternatives to OpenCode chosen?
Tools are ranked by similarity to OpenCode (shared use cases, target audience, tech stack and pricing model) and filtered to those whose listing shows a free tier, freemium plan or open-source edition. Where fewer than 2 close matches exist, popular free Developer Tools tools fill the list and are labelled as such.
Building a free Developer Tools tool?
List it free. Tools with a free tier appear on pages like this one.